motif-peak-overlap-matching

motif-peak-overlap-matching is a skill for Claude Code, Codex from HolobiomicsLab/asb-skill-collections. It costs 66 tokens per session (1,458 once invoked), scanned A, original, Apache-2.0.

A bioinformatics step that matches known transcription-factor DNA motifs to chromatin-accessibility peak regions. It identifies which peaks contain which motifs before later calculating motif activity scores across samples.

In plain words
What is it for?
Use it with motif collections such as JASPAR and filtered ATAC-seq peaks to produce motif-to-peak matches for chromatin-accessibility studies.
Why use it?
It creates the link between DNA sequence patterns and accessible regions needed for downstream analysis. Filtering the peaks and using a matching reference genome helps avoid redundant or false matches.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it with motif collections such as JASPAR and filtered ATAC-seq peaks to produce motif-to-peak matches for chromatin-accessibility studies.

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Install with agentmods
npx agentmods add skills/holobiomicslab/asb-skill-collections/motif-peak-overlap-matching
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add HolobiomicsLab/asb-skill-collections --skill motif-peak-overlap-matching
Clone the repo
git clone --depth 1 https://github.com/HolobiomicsLab/asb-skill-collections

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for motif-peak-overlap-matching

README.md
[![agentmods](https://agentmods.dev/badge/skills/holobiomicslab/asb-skill-collections/motif-peak-overlap-matching/github.svg)](https://agentmods.dev/skills/holobiomicslab/asb-skill-collections/motif-peak-overlap-matching)
Your own site
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Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for motif-peak-overlap-matching

Your own site · 80×15
<a href="https://agentmods.dev/skills/holobiomicslab/asb-skill-collections/motif-peak-overlap-matching"><img src="https://agentmods.dev/badge/skills/holobiomicslab/asb-skill-collections/motif-peak-overlap-matching.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 66 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,458 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00066 $0.01458
Opus 5 $0.00033 $0.00729
Sonnet 5 $0.00013 $0.00292
Haiku 4.5 $0.00007 $0.00146

Measured 9d ago against content hash 1dd1daab3961, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

motif-peak-overlap-matching scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

collections/epigenomics/v1/skills/motif-peak-overlap-matching/SKILL.md · 106 lines

How it starts

The opening of the file, as written. The whole thing — 106 lines — stays where its author put it; the contents beside it link to each section on GitHub.

motif-peak-overlap-matching

Summary

Match transcription factor motifs to chromatin accessibility peaks to identify which peaks contain which DNA binding motifs. This is an essential preprocessing step that links motif occurrence to peak regions before computing deviation scores in chromatin accessibility analysis.

When to use

Apply this skill when you have a filtered set of non-overlapping peaks from ATAC-seq data and a collection of motifs (typically from JASPAR or similar databases), and you need to identify which peaks contain matches to which motifs as a prerequisite for computing motif-based deviation scores across samples.

When NOT to use

  • You already have pre-computed motif-peak matches from another tool or database and do not need to re-match.
  • Your peaks have not been filtered for quality or overlaps, as matching on unfiltered peak sets may produce spurious or redundant motif calls.
  • Your reference genome does not match your peak coordinate system (e.g., peaks are from hg38 but you provide hg19).

Inputs

  • motif collection (e.g., JASPAR motifs as PWMatrix or PWMatrixList)
  • filtered peaks (GenomicRanges object)
  • reference genome (BSgenome object, e.g., BSgenome.Hsapiens.UCSC.hg19)

Outputs

  • motif-peak index object (sparse binary matrix or similar structure indicating which peaks contain which motifs)

How to apply

Use the matchMotifs function from the motifmatchr package, providing the motif collection, the filtered peak set as a GenomicRanges object, and a reference genome (e.g., BSgenome.Hsapiens.UCSC.hg19). The function performs sequence matching to determine peak-motif overlaps. The resulting motif-to-peak index object stores which peaks contain which motifs, and this becomes the 'annotations' argument for downstream computeDeviations. The matching is genome-aware: it retrieves sequences from the reference genome corresponding to each peak region and scans for motif matches using position weight matrices, enabling accurate identification of potential transcription factor binding sites.

Read the full file on GitHub · 106 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 106 lines · 66 tokens per session scan A 1dd1daab3961

Subscribe to this mod's changes

motif-peak-overlap-matching is a skill published in the GitHub repository HolobiomicsLab/asb-skill-collections (15 stars, last pushed yesterday), licensed Apache-2.0. It adds 66 tokens to every session and 1,458 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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